Scoped 10/22
- Thread starter m2101
- Start date
- Location
- Western Manitoba
If you mounted a 3-9x40 centre fire scope on your .22, you likely have significant parallax going on as well. Typical centerfires scope is set parallax free at about 150 yards; rimfire scopes are parallax free at 50 to 65 yards depending on brand. Scopes with Adjustable Objective (AO) can be used, so long as you verify the parallax free distance - do so, by moving your head slightly side to side or up and down when sighting through scope - if cross hairs appear to move on the target, without the scope moving, then you are seeing effect of parallax. The numbers written at the AO ring may or may not conform with the real world - you should check them at known ranges. And, yeah, you adjust the turret settings to bring your group to point of aim - nothing to do (at least initially) with the height of the rings that you chose to use.
When holding on the first holdover, it is dead on at 25 meters. I just don't like the idea of not being able to zero it properly. I have used this rifle to hunt and being able to head shot grouse at this distances . just want to zero it at 50 meters. Yes it is centerfire scope.
This
- Location
- Western Manitoba
I have installed scopes on three 10/22 and have not had this problem. But only used standard scope base rails. Is it possible that you have a canted rail, like a 10 or 20 MOA, that is installed backward?? Should be mounted with thinnest end towards the front.
- Location
- Western Manitoba
When you are checking, you will be looking for a very small error. If you are 1" low at 25 yards, that is 1" low in 900". Assuming that your rings are 4" apart, then that 1/900 ratio would mean that your front ring is .0045" higher than the back one. That is about the thickness of a sheet of computer printer paper. So, somehow, the scope tube at the front ring is about that much higher than the scope tube at the rear ring. You say that you have run out of "up" adjustment, so the error will actually be somewhat larger, because normally would expect your scope to be somewhere not far from centered settings, not at such an extreme of range of adjustment.
Sure you have the same set of rings?
First, swap rings front to back. If no change, its prob the base, as mentioned above - flip it around, and make sure there is clean contact on the underside of the base (no crud buildup)
Careful tightening with the base screws! 10/22 receivers aren't the strongest metal...
First, swap rings front to back. If no change, its prob the base, as mentioned above - flip it around, and make sure there is clean contact on the underside of the base (no crud buildup)
Careful tightening with the base screws! 10/22 receivers aren't the strongest metal...
It's possible the barrel droops. For an inexpensive fix, try a shim under the scope on the rear ring. Use thin material, such as from an aluminum can, and exercise care when tightening the ring.
Last edited:
